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Year : 2020  |  Volume : 19  |  Issue : 2  |  Page : 155-158

Late recurrence of a papillary thyroid carcinoma 37 years after hemithyroidectomy: Solitary, left cervical lymph node metastasis evident on fluorodeoxyglucose positron-emission tomography/computed tomography images revealing nodular uptake

1 Department of Radiology, Juntendo Nerima Hospital, Tokyo, Japan
2 Department of Pathology, Juntendo Nerima Hospital, Tokyo, Japan

Correspondence Address:
Dr. Hiroaki Kunogi
Department of Radiology, Juntendo Nerima Hospital, 3-1-10, Takanodai, Nerima-ku, Tokyo 177-8521
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DOI: 10.4103/wjnm.WJNM_72_19

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In patients with well-differentiated papillary thyroid carcinoma (PTC), late recurrence is very rare. It is unusual that18F-fluorodeoxyglucose positron-emission tomography/computed tomography (PET/CT) shows hypermetabolic lesions in patients with well-differentiated PTC metastases. We demonstrate an exceptional case exhibiting a first relapse 37 years after hemithyroidectomy to treat PTC. Recurrent metastasis of a PTC should be considered as a differential diagnosis even if the elapsed time from the initial treatment is great. A left cervical lymphadenopathy, which exceptionally exhibited a hypermetabolic lesion on PET/CT, should be considered a metastatically well-differentiated PTC.

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